Disk gang plow



c. s. STRANDLUND ET AL 1,834,227

DISK GANG PLOW Original Filed Oct. 1. 1918 3 Sheets-Sheet 1 m m M m wa o m J Z A o p; M Q M Q M No 6% Q m Q N% MN P \N R x o .H N o ML/k mm UN fix m s o R M Q N w N m UNI W. @o @lilL w 1 x g a Q a $4 RN x E. W

Dec. 1, 1931.

Dec. 1, 1931. c. s. STRANDLUND ET AL DISK GANG PLOW Original Filed Oct. 1. 1918 3 Sheets-Sheet 2 fwuferwgrs E 4 H C v U h 1e S Dec. 1, 1931. c. G. STRANDLUND ET AL 1,834,227

DI SK GANG PLOW Original Filed Oct. 1, 1918 3 Sheets-Sheet 3 Patented Dec. 1, 1931 UNHED ssrArrE s {PATENT OFFICE" GABIL G.- STRANDLUND AND JOHN V. HOLSTEIN, OF MOLINE, ILLINOIS, ASSIGNORS TO DEERE & COMPANY ,1 OE'MOLINE ILLINOIS, A CORPORATION OF ILLINOIS Qnrsx GANG PLOW Original application filed october 1, 1918, Serial No. 256,391. Divided and this application filed March 7,

1927. Serial No. 173,240.

The present invention relates to gang plows and is divisional of our copendingapplication, Serial No. 256,391, filed October 1, 1918. I In this prior application we disclosed an improved'construction ofgang plow comprising a frame or beam structure to which the furrow openers are attached, and whichis supported on front and rear furrow wheels and a land wheel in such manner that'it may be raised to lift "the furrow openers out of I operative position by power "derivedfrom' the traction of the land wheel. The present invention pertains mainly to certainimprovements in the frame structure of' plows of this general class, and it has for its principal objects to provide an improved frame structure by which the furrow openers'will be firmly supported, and the draftpower will be properly transmitted thereto, so that they will operate to the best advantage; and to provide an improved attachment of the'land wheel frame or bearing .to' thepmain beam structure. We accomplishthese and other objects as illustrated in the drawings and as hereinafter described. What we regard as in afidiiferent position.

The frame of the plow comprises beams 1, 2, 3 and 4;, rigidly bolted together; the beams 1, 2 and 3 for a portion of their length, are

bent rearwardiy andfurrowward with a downward inclination, and upon them are mounted disk plows of a well known type. As clearly shown in Figure 1, the forward portions of each of these beam bars 1, 2, 3 and i overlap and are bolted together, suchpreferably constitutlng the entire beam structure. The outwardly bent rear ends of the beam bars 1 and 2 are braced by angle braces 1a and 2a which are rigidly secured to said outward- 1y bentrearends and to the body of the beam. The outwardly bent rear ends of the beam bars 3 and 4 are reenforced by a brace in the form of a section of channel 3a, which is bolted to the two bars 3 and 4 between the same. The outwardlyand rearwardly bent end of the beam bar 4 carries the rear furrow wheel, as will bepresently described. The

"beam as a whole is disposed diagonally, its

forward end being inclined toward the furrowward side of the plow, at which DOHltlt is provided with a transverse bar 5 rigidly I secured to the forward endportion of the beam 1, which is bentfurrowward, as shown inFigure 1, and also tothe beam 2, prefer ably by means of a brace 6. The bar 5 extends landward beyond the said brace, and

its landward end portion is firmly secured to the beam structure at a longitudinally in- -termediate point by a brace 7, the front'end of which is secured to the bar 5 at 7d,-while the rear end thereofis secured-to the beam 3 at 7 b. 'Adjacent to but somewhat in rear of themiddle portion of the beain'structure-is a bracket 8 which projects landward therefrom. As shown in Fig. 1, this bracket is constructed in the form of an open. frame having two forwardly extending end portions 8% and 8b which are bolted to the side of the main beam structure. As will be presently'described, this bracket constitutes the attachmentby which the transverse hearing or aux- 'iliary frame 33 of the land wheel is securedto the mainframe beam. from the foregoing that the main beam as a It will be evident whole constitutes a diagonally arranged bar extending fore and aft that is made up of l the severalbeams 1, 2, 3 and 4 and is adapted to support the furrow openers.

' Held rigidly in bearings 9 and 10, secured to the beam 1 and the brace 7, is a transversely extending mounting bar 11, preferably rectangular in cross section, having its furrowward end 12 bent upward practically at a right angle, on which I mount a bracket 13. A sleeve 14, preferably integral with the bracket 13, forms a bearing in which is jour-.

naled the vertical spindle a of a crank axle on the main frame by means of the brace 7.

The rock shaft 18 extends beyond the bear- 7 ing 19 toacconimodate an arm 20' which is keyed or otherwise secured thereon intermediate its length.

On the rock shaft 18, adjacent the support" 17, is rigidly secured a forwardly extending arm 21 having'pivotally secured to its ex tremity a link 22 which is also pivotally connected to a collar 23 on the upper portion of the vertical spindle a of the crank axle 15, the collar 23 being held in place by a bolt 24 which projects through a slot in the collar 23 so as to permit a limited rotary play of. I

. the spindle therein.

can

Securely bolted to the rearward end of the beam 4 IS a bracket 25 havlng a sleeve 26 in which is rotatably mounted a vertical spindle b of a crank axle 27 on which is carried the rear furrow wheel 28. On'a rearwardly extending portion of the bracket 25 is pivotally mounted a bell crank 29, to'the end of a horizontal portion of which ispivotally connected a link 30 which is also pivotally atr tached toa collar 31 held on the upper portion of the spindle Z) by a bolt 32 the latter extending through a slot in the collar 31 to permit a limited rotary movement of the spindle b.

A transverse hearing or auxiliary-frame .33 is rigidly bolted to the bracket 8, and

therein is-journaled a crank axle 34 which extends landward from the bearing 33 and is then bent downward at substantially. a

right angle andterminatesin a portion 35 substantially parallel to the part held in the bearing 33. On the portion 35 is mounted the land wheel 36 provided with a clutch mechanismby which the traction power of the land wheel is employed to raise the plow,

as fully described and illustrated in letters patent to- Carl G. Strandlund, Reissue No.

. 15,828, dated April 29, 1924. On the furrowward end of the crank axle 34, projecting beyond thebearing 33, is rigidly secured an arm 37-to which is pivotally secured a forwardly extending rod 38 having a segment 39 rigidly mounted on the forward end thereof; a hand lever 40 is pivoted on the rod '38 and isprovided with a latch to engage with the segment in the usual manner.

The lever 40 extends below its pivotal connection to the rod 38, from which point it is bent forwardly and pivotally connected to the upper end of the arm 20; a hook is formed on the lower end of the arm 20 to which is connected a relief spring 41, the latter extending to engagement with a hook bolt 42 secured on a bracket 43 on the beam 2. The

arm 37 is provided with a rearwardly extendthe opposite side of the rearwardlyextending portion of the bracket 25 and parallel to the vertical arm of the bell crank 29, to the upper end of which it is bolted, the purpose of the strap47 being to reinforce the vertical arm of the bell crank 29 against lateral strain.

A landwardly extending arm 48 is rigidly plow both furrow wheels will be swung simultaneously but in opposite directions.

, As shown in Figure 3, the arm 37 is substantially at the limit of its rearward rocking movement when the plow is in operative position, and the point of connection of the rod with the rearwardly extending portion 44 of thearm 37 is then below the plane of the point of connection of the rod 38 with the arm 37. Consequently when the arm 37 is rocked forwardly, in the operation of raising the plow either out of'operative position or for the purpose of changing the depth at which it is desired-the plow shall work, the

effect upon the rear furrow wheel of the rocking movement of the arm 37 is practically nil untilthe rods 38 and 45 are in substantial alinement, but the effect upon the front furrow wheel of the rocking movement of the arm 37 is practically instantaneous and therefore the forward part of the plow will be raised in advance of the rear part until the rods 38 and 45 are substantially in alinement. 1

The crank axle 34 is rockable by'operation of a lever 51, as more fully detailed in the Strandlund patent above referred to, to swing the land wheel 36 to raise or lower the plow to regulate the depth of plowing. The rear furrow whee128 travels in the previously made furrow, and the front furrow wheel 16 coacts with the land wheel in the usual way. On a casting 52, rigidly mounted on the crank portion of the crank axle 15, we secure rigidly a forwardly extending link 53 pivotallyconnected to a laterally extending bar 54 by means of a hook on the latter enposed of an upper member 55 and a lower member 56 spaced apart to permit of the passage therebetweenof the bar 54, and adapted Zto be connected to a tractor in any suitable manner. The bar 54 is provided with a series of perforations 57 bywhich it is held in place on the draft bar bya bolt or pin extending through anyone of the perforations 57 and the members 55 and 56' of the draft bar. By this con-structionit will be' readily seen'that when thetractor isturningtthe. draft bar will be swung in. the direction of theturn andthrough the bar 54 and the'link53 the furrow-wheels-IG and 28 will respond to guide the plow in the direction taken by the: tractor.

The mode'of operationof thelift mechanism and of the depth adjustments above referred to has been described at length in our above-mentioned copending: application, wherein such subjectmatter has been claimed. lVe shall, therefore, only describe this general operation sufficiently to com plete the present disclosure.

The plow frame moves freely vertically on the spindles a and b at all times, whether traveling. straight. ahead or turning, when the raising mechanism is actuated to raise theplow or=is tripped to lower it to an operative position. The plow being down, as shown in Figure 3, when the clutch mechanism is tripped into action by the operator, the axle 3% rocks to swing the land wheel 36 relatively downwardly and rearwardly, and at the same time the arm 37 is rocked forwardly, actuating the bell crank 29, through its connection therewith by the rod 45 as the bell crank 29' rocks, through the link 30 pivotally connected to the forwardly extending arm of the bell crank and to the collar 31 onthe-spindle b, the rear end of the plow is raised, sliding freely on the spindle b. The lever 40 is engaged with the segment 39, and as the latter is rigidly connected with the rod 38 which is pivotally connected to the arm 37, these parts move together in raising the plow. The lever 40 is connected at its lower end to the arm 20 on the transverse rock shaft 18, and therefore as the arm 37 is rocked forwardly the arm 20 is also rocked in a forward direction, and by the connection of the link 22 with the upper end of the spindle a the forward end of the plow is raised. By operating the lever 40 the front furrow wheel is independently adjustable to level the plow irrespective of the depth of plowing, and irrespective of the position of the rear furrow wheel and the land wheel.

The plow being raised from the ground as shown in Figure 2, if it be desired to lower it to operative position the parts of the clutch mechanism which hold the plow up, as explained in the Strandlund patent above referred to, are tripped by the operator, where upon the weight of the plow reverses the action of the parts just described, and the plow descends to the ground. The depth of plowing is regulated by the position of the land and furrow wheels with relation to the frame, and the front furrow wheel 16 and the land wheel 36 are vertically adjustable independently of each other. The land wheel 36 is adjustable by operation of the lever 51 asfully described in said Strandlund patent. V i

Thedraft devices 54 55 transmit power to the rod 50 which connects thespindles-of the front and rear furrow wheels and therefore the operator canoptionally steer the plow by power, and can, at his option, by the clutch control, cause the actuation of all of the lifting devices at the'same time to lift the frame with respect to all three Wheels. These lifting and lowering movements of the frame'and disks can be accomplished, either while the plow is moving on'straightilines, or simultaneously with its steering movements optionally caused by the operator when he turns the tractor and thereby applies its power to the horizontally swinging wheels. lVhile the improved construction above de-' scribed is peculiarly advantageous in connection .with gang plows employing furrow openers in the form of disks, it may also be used to advantage with furrow openers of the moldboard type and, therefore, we wishit to be understood that the claims hereinafter made are intended to comprehend gang plows using furrow openers of either type. What we claim as our invention and desire to secure by Letters Patent, is

i 1. Ina wheeled plow, the combination of a frame comprisinga diagonally disposed beam structure, front and rear furrow wheels and a land wheel supportingsaid frame, furrow openers connected with said beam structure, a transversely disposed bar at the forward end of said beam structure and fixedly connected therewith, a=brace rigidly connected with the landward end portion of said bar and with an intermediate portion of said beam structure, a second transversely disposed bar secured to said first bar and sup portingxsaid front furrow wheel at its furrowward end and draft devices connecte with said first transverse bar.

2. Ina plowof the class described, a diagonally arranged bar extending fore and aft of the-plow and adapted to support a plurality offurrow turning elements, and the forward end of which is bent and extends transversely to the path of travel of'the plow,

wheels for supporting said bar from the ground, a transversely extending draft frame,

the: furrowward end portions of which is fixedly secured tosaid bent portion, and through which tractive force may be applied to the plowto draw. the same, a brace member, the forward-end. of which is secured to the and a land wheel supporting said frame,furrow openers connected with said beam structure, a transversely disposed draft bar at the forward end of said beam structure and fixedly connected therewith, a brace rigidly connected with the landward end portion of said draftbar and extending back and being connected with said beam structure, a transversely extending mounting bar, bracket means securing said mounting bar to said draft bar, the furrowward end of said mounting bar being bent upwardly, and a bracket supported on said upwardly bent end and mounting said front furrow wheel.

4. In a wheeled plow, the combination of a'composite diagonally'disposed beam struc--' ture built up of a plurality of relatively short beams having their forward ends overlapping and rigidly secured together, the rearward ends of the individual beams proj ect ng laterally from the composite beam structure, furrow openers mounted on said laterally projecting rear ends, front and rear furrow wheels and a land wheel supporting said beam structure, a transversely disposed bar at the forward end of said beam structure and fixedly connected therewith, the front end of theforward beam being bent laterally for attachment to said transversely disposed bar,

a brace rigidly connected with the landward s end portion of said bar and with an intermediate portion of said beam structure, and 1(graft devices connected with said transverse 5. In a plow of the class described, the combination of a composite diagonally disposed beam structure built up of a plurality of relatively short beams having their forward portions overlapping and rigidly secured together, the rear portions of said beams being bent laterally relatively to the beam structure, furrow openers mounted on said laterally projecting rear ends, wheels for supporting said beam structure, a transversely disposed bar at the forward end of said beam structure, laterally spaced bracket means fixedly connecting the bar to said beam structure, and draft devices connected with said transverse bar.

6. In a wheeled plow, the combination of a composite diagonally disposed beam structure built up of a plurality of relatively short beams having forward portions overlapping and rigidly secured together, the rear portions of certain of said beams being bent laterally relatively to the composite beam structure, furrow openers mounted on said laterally projecting rear portions, the

rear portion of another of said beams also being bent laterally relatively to the beam structure, a rear furrow wheel mounted on said latter bent portion, a land wheel and a front furrow wheel also supporting said beam structure, and means for establishing a draft connection with said beam structure.

, 7. In a wheeled plow, the combination of a composite diagonally disposed beam structure built up of a plurality of relatively short beams having forward ends overlapping and rigidly secured together, the rearportions of said beams being bent laterally'relatively to the beam structure, a furrow opener mounted on one of said laterally projecting rear portions, a rear furrow wheel mounted on another of said laterally projecting rear portions, a brace member secured between said two laterally projecting rear portions, a front furrow wheel and a land wheel also supporting said beam structure, and means for establishing a draft connection with said beam structure.

, 8. In a wheeled plow, the combination of a diagonally disposed beam structure, furrow openers carried by said beam structure, front and rear furrow wheels and a land wheel supporting said beam structure, means for establishing a draft connection with said beam structure, a crank axle on which said land wheel is mounted, a frame bearing in which this crank axle is journaled for swinging movement, and a bracket secured between said beam structure and said frame bearing structure, said bracket being constructed in the form of an angular frame having two of its sides secured to one of said structures and another of its sides secured to the other structure. 7

CARL o; STRANDLUND. JOHN v. HOLSTE-IN. 

